jakebrake86 Posted July 25, 2014 Share Posted July 25, 2014 My cousin is looking at buying an '06 CH dump with a Mack 18 speed. Neither one of us are familiar with them. Are they any good? It'll be off road almost as much as it's on pavement. Quote Jake Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/ Share on other sites More sharing options...
gearhead204 Posted July 25, 2014 Share Posted July 25, 2014 I haven't been around any with any miles on them seem to be alright but I thought they were stiff shifting pricks as compared to a eaton/fuller. that's my .02 1 Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-253960 Share on other sites More sharing options...
6368 Posted July 25, 2014 Share Posted July 25, 2014 Is that a t318 or a t2180? i don't know when they switched. either way the first gear will be about 13.5 to 1 compared to 14.56 for a fuller 8ll like i assume your RD has. this wouldn't be that bad but i would be concerned that a ch probably doesn't have steep enough gears in the rears for off road work. My 1996 rd688s had 4.46 rears 24.5 tires and an 8ll and i thought it was the perfect on/off road truck. Sorry i can't be more help on the trans as i don't have much time with mack 18. i just wanted to remind you to think about the overall ratio when looking at a truck for off road. Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-253961 Share on other sites More sharing options...
slpwlker Posted July 25, 2014 Share Posted July 25, 2014 I agree with Gearhead. maybe it is because it is in a cab over but the only 1 I ever drove a couple times is one stiff shifting sob. You get a workout for sure. With the right gearing you got some low gears in the basement Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-253965 Share on other sites More sharing options...
Kansas farmer Posted July 25, 2014 Share Posted July 25, 2014 We run an 18 sp with 442 gears and I have no problem pulling 85000 out of a field. Most of the oilfield trucks around here are 18s as far as gears go I'm not sure what everybody runs but they are both on and off road. I do agree that you need to be Johnny on the spot when shifting but once you get used to it no problem. Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-253969 Share on other sites More sharing options...
bts-4120 Posted July 25, 2014 Share Posted July 25, 2014 if its a lr it will have a lo hole and reverse as slow as a 8ll Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-253979 Share on other sites More sharing options...
Popular Post doubleclutchinweasel Posted July 25, 2014 Popular Post Share Posted July 25, 2014 I've said it before, and I'll say it again...A Mack 18-speed is supposed to have 2 sticks!Thus sayeth The Weasel... 1 4 Quote "Eagles may soar, but weasels don't get sucked into jet engines." Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-253980 Share on other sites More sharing options...
rick harper Posted July 25, 2014 Share Posted July 25, 2014 just PRE-SELECT otherwise you'll burn up the scyros in the back box I'll guarantee that. Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-253982 Share on other sites More sharing options...
wheeler73 Posted July 25, 2014 Share Posted July 25, 2014 If the trans is a 2006 trans it is a T318 trans. The only issues with them is mainly sychronizers. Also they need to be serviced regulary or there will be bearing and gear failures. Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-253995 Share on other sites More sharing options...
wheeler73 Posted July 25, 2014 Share Posted July 25, 2014 Also do not range shift in reverse!! Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-253996 Share on other sites More sharing options...
j_martell Posted July 26, 2014 Share Posted July 26, 2014 Don't mean to hijack, but Wheeler got me thinking.....why shouldn't you change ranges in reverse? The syncros only work one way.....?Just cause I wanna know lol Quote Lack of planning on your part does not constitute an emergency on my part.... Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-254013 Share on other sites More sharing options...
Maddog13407 Posted July 26, 2014 Share Posted July 26, 2014 never drove a newer one, only 18 speed Mack I ever drove had two sticks but a local Milk company has 18 speeds I think in all of their visions. I know an old guy that works for the that probably drove ever truck ever made and i have heard what pretty much what everyone else says, they are stiff shifting. I think he also says some trucks have 13 or 15 speeds and some have 18 speeds. says if you change trucks often, it makes you think. Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-254014 Share on other sites More sharing options...
Dirtymilkman Posted July 26, 2014 Share Posted July 26, 2014 I run all 18 speeds in and out of yards and down the interstate. We love them. I change grease every 200,000 or so and only issue ever has been a weak snap ring. But once they're updated I've not had issues. We run 80,000+ and 3.86 gears and have no trouble pulling out of muddy yards or starting on hills. Low hole can be challenging to shift out of sometimes. Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-254025 Share on other sites More sharing options...
wheeler73 Posted July 26, 2014 Share Posted July 26, 2014 It causes damage to the synchroniser and sliding clutches and viods warranties as it is easily spotted on teardown. Also pre select all range and split shifts to avoid rapid wear. We see range shift failures in reverse quite often. Also see a lot of wear from not pre selecting ranges and splits. The T series of trans are stiffer to shift. Nothing shifts as easy as a worn out Eaton but in the correct application the Mack trans hold up better. Most of what we sell are Mack trans. Most dump trucks get the T310M and line haul get the T313 and lowboy's get the T318. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-254026 Share on other sites More sharing options...
wheeler73 Posted July 26, 2014 Share Posted July 26, 2014 Also forgot if it is a CH dump truck make sure it has the correct front and rear axles and suspension for the application and that they double framed it. We see them all the time. A good DOT officer will spot the axles and suspension and red tag the truck. But there are very few of those officers. We see those trucks all the time. Most are built in Miami but we have seen some from Texas lately. Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-254027 Share on other sites More sharing options...
bbigrig Posted July 28, 2014 Share Posted July 28, 2014 My Fuller 18's may be weaker in design and engineering but hold out just as well as my Mack 18. Our's run regional and go through the gears often in city traffic. The Range syncro and output shaft c-clip are the worst parts of the Mack trans. Both must have the entire trans removed to replace. (unlike the Fuller)The range syncro clutch pack from PAI seem to last longer and are 25% cheaper then Mack's.(Our local rebuilder agrees)Otherwise the Fuller 18 is cheaper to repair and spec on a new unit, lighter and easier to service or rebulid then the Mack 18. The Mack trans doesn't have a lot going for it besides it being built by Mack. Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-254286 Share on other sites More sharing options...
Specialty logging Posted March 25, 2019 Share Posted March 25, 2019 I never had any luck with t2180 Mack trans. Last one was a reman from Mack and had 56000 miles and won’t shift into low range anymore. It shifted so easy but didn’t last two years. Total junk I. My opinion. I’ll take any Eaton fuller any day over Mack junk. Tony D. Specialty logging Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-418958 Share on other sites More sharing options...
Elephant ears Posted July 19 Share Posted July 19 On 7/25/2014 at 11:03 AM, doubleclutchinweasel said: I've said it before, and I'll say it again... A Mack 18-speed is supposed to have 2 sticks! Thus sayeth The Weasel... The Old Mack’s yes today there is 1 stick it’s air shifted Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-555526 Share on other sites More sharing options...
Elephant ears Posted August 1 Share Posted August 1 On 7/25/2014 at 11:03 AM, doubleclutchinweasel said: I've said it before, and I'll say it again... A Mack 18-speed is supposed to have 2 sticks! Thus sayeth The Weasel... Yes Sir drove one of these during the blizzard of 1996 here in NJ a 1964 b81 for 3 days nothing like it Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-556247 Share on other sites More sharing options...
tjc transport Posted August 1 Share Posted August 1 my first paid truck job was a B-815. V8 with a quad box. Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-556251 Share on other sites More sharing options...
Elephant ears Posted November 5 Share Posted November 5 On 8/1/2024 at 7:58 AM, tjc transport said: my first paid truck job was a B-815. V8 with a quad box. When trucks where trucks 1 Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-561359 Share on other sites More sharing options...
Elephant ears Posted November 5 Share Posted November 5 I drove a RD 688 tandem dump with a 350 Mack and a Mack 18spd box no problems smooth shifting box no complaints here Quote Link to comment https://www.bigmacktrucks.com/topic/36458-mack-18-speed/#findComment-561361 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.